Module netapp_ontap.resources.nvme_subsystem

Copyright © 2022 NetApp Inc. All rights reserved.

Overview

An NVMe subsystem maintains configuration state and namespace access control for a set of NVMe-connected hosts.
The NVMe subsystem REST API allows you to create, update, delete, and discover NVMe subsystems as well as add and remove NVMe hosts that can access the subsystem and associated namespaces.

Examples

Creating an NVMe subsystem

from netapp_ontap import HostConnection
from netapp_ontap.resources import NvmeSubsystem

with HostConnection("<mgmt-ip>", username="admin", password="password", verify=False):
    resource = NvmeSubsystem()
    resource.svm = {"name": "svm1"}
    resource.name = "subsystem1"
    resource.os_type = "linux"
    resource.post(hydrate=True)
    print(resource)

Creating an NVMe subsystem with multiple NVMe subsystem hosts

from netapp_ontap import HostConnection
from netapp_ontap.resources import NvmeSubsystem

with HostConnection("<mgmt-ip>", username="admin", password="password", verify=False):
    resource = NvmeSubsystem()
    resource.svm = {"name": "svm1"}
    resource.name = "subsystem2"
    resource.os_type = "vmware"
    resource.hosts = [
        {"nqn": "nqn.1992-01.example.com:host1"},
        {"nqn": "nqn.1992-01.example.com:host2"},
    ]
    resource.post(hydrate=True)
    print(resource)

Retrieving all NVMe subsystems

from netapp_ontap import HostConnection
from netapp_ontap.resources import NvmeSubsystem

with HostConnection("<mgmt-ip>", username="admin", password="password", verify=False):
    print(list(NvmeSubsystem.get_collection()))


[
    NvmeSubsystem(
        {
            "svm": {"uuid": "a009a9e7-4081-b576-7575-ada21efcaf16", "name": "svm1"},
            "uuid": "acde901a-a379-4a91-9ea6-1b728ed6696f",
            "name": "subsystem1",
        }
    ),
    NvmeSubsystem(
        {
            "svm": {"uuid": "a009a9e7-4081-b576-7575-ada21efcaf16", "name": "svm1"},
            "uuid": "bcde901a-a379-4a91-9ea6-1b728ed6696f",
            "name": "subsystem2",
        }
    ),
]

Retrieving all NVMe subsystems with OS type linux

Note that the os_type query parameter is used to perform the query. 

from netapp_ontap import HostConnection
from netapp_ontap.resources import NvmeSubsystem

with HostConnection("<mgmt-ip>", username="admin", password="password", verify=False):
    print(list(NvmeSubsystem.get_collection(os_type="linux")))


[
    NvmeSubsystem(
        {
            "os_type": "linux",
            "svm": {"uuid": "a009a9e7-4081-b576-7575-ada21efcaf16", "name": "svm1"},
            "uuid": "acde901a-a379-4a91-9ea6-1b728ed6696f",
            "name": "subsystem1",
        }
    )
]

Retrieving a specific NVMe subsystem

from netapp_ontap import HostConnection
from netapp_ontap.resources import NvmeSubsystem

with HostConnection("<mgmt-ip>", username="admin", password="password", verify=False):
    resource = NvmeSubsystem(uuid="acde901a-a379-4a91-9ea6-1b728ed6696f")
    resource.get()
    print(resource)


NvmeSubsystem(
    {
        "io_queue": {"default": {"count": 4, "depth": 32}},
        "os_type": "linux",
        "target_nqn": "nqn.1992-08.com.netapp:sn.d04594ef915b4c73b642169e72e4c0b1:subsystem.subsystem1",
        "svm": {"uuid": "a009a9e7-4081-b576-7575-ada21efcaf16", "name": "svm1"},
        "uuid": "acde901a-a379-4a91-9ea6-1b728ed6696f",
        "name": "subsystem1",
        "serial_number": "wtJNKNKD-uPLAAAAAAAD",
    }
)

Retrieving the NVMe namespaces mapped to a specific NVMe subsystem

Note that the fields query parameter is used to specify the desired properties. 

from netapp_ontap import HostConnection
from netapp_ontap.resources import NvmeSubsystem

with HostConnection("<mgmt-ip>", username="admin", password="password", verify=False):
    resource = NvmeSubsystem(uuid="acde901a-a379-4a91-9ea6-1b728ed6696f")
    resource.get(fields="subsystem_maps")
    print(resource)


NvmeSubsystem(
    {
        "svm": {"uuid": "a009a9e7-4081-b576-7575-ada21efcaf16", "name": "svm1"},
        "uuid": "acde901a-a379-4a91-9ea6-1b728ed6696f",
        "subsystem_maps": [
            {
                "anagrpid": "00000001h",
                "namespace": {
                    "name": "/vol/vol1/namespace1",
                    "uuid": "eeaaca23-128d-4a7d-be4a-dc9106705799",
                },
                "nsid": "00000001h",
            },
            {
                "anagrpid": "00000002h",
                "namespace": {
                    "name": "/vol/vol1/namespace2",
                    "uuid": "feaaca23-83a0-4a7d-beda-dc9106705799",
                },
                "nsid": "00000002h",
            },
        ],
        "name": "subsystem1",
    }
)

Adding a comment about an NVMe subsystem

from netapp_ontap import HostConnection
from netapp_ontap.resources import NvmeSubsystem

with HostConnection("<mgmt-ip>", username="admin", password="password", verify=False):
    resource = NvmeSubsystem(uuid="acde901a-a379-4a91-9ea6-1b728ed6696f")
    resource.comment = "A brief comment about the subsystem"
    resource.patch()

Deleting an NVMe subsystem

from netapp_ontap import HostConnection
from netapp_ontap.resources import NvmeSubsystem

with HostConnection("<mgmt-ip>", username="admin", password="password", verify=False):
    resource = NvmeSubsystem(uuid="acde901a-a379-4a91-9ea6-1b728ed6696f")
    resource.delete()

Deleting an NVMe subsystem with mapped NVMe namespaces

Normally, deleting an NVMe subsystem that has mapped NVMe namespaces is not allowed. The deletion can be forced using the allow_delete_while_mapped query parameter. 

from netapp_ontap import HostConnection
from netapp_ontap.resources import NvmeSubsystem

with HostConnection("<mgmt-ip>", username="admin", password="password", verify=False):
    resource = NvmeSubsystem(uuid="acde901a-a379-4a91-9ea6-1b728ed6696f")
    resource.delete(allow_delete_while_mapped=True)

Delete an NVMe subsystem with NVMe subsystem hosts

Normally, deleting an NVMe subsystem with NVMe subsystem hosts is disallowed. The deletion can be forced using the allow_delete_with_hosts query parameter. 

from netapp_ontap import HostConnection
from netapp_ontap.resources import NvmeSubsystem

with HostConnection("<mgmt-ip>", username="admin", password="password", verify=False):
    resource = NvmeSubsystem(uuid="acde901a-a379-4a91-9ea6-1b728ed6696f")
    resource.delete(allow_delete_with_hosts=True)

An NVMe Subsystem Host

An NVMe subsystem host is a network host provisioned to an NVMe subsystem to access namespaces mapped to that subsystem.

Examples

Adding an NVMe subsystem host to an NVMe subsystem

from netapp_ontap import HostConnection
from netapp_ontap.resources import NvmeSubsystemHost

with HostConnection("<mgmt-ip>", username="admin", password="password", verify=False):
    resource = NvmeSubsystemHost("acde901a-a379-4a91-9ea6-1b728ed6696f")
    resource.nqn = "nqn.1992-01.com.example:subsys1.host1"
    resource.post(hydrate=True)
    print(resource)

Adding multiple NVMe subsystem hosts to an NVMe subsystem

from netapp_ontap import HostConnection
from netapp_ontap.resources import NvmeSubsystemHost

with HostConnection("<mgmt-ip>", username="admin", password="password", verify=False):
    resource = NvmeSubsystemHost("acde901a-a379-4a91-9ea6-1b728ed6696f")
    resource.records = [
        {"nqn": "nqn.1992-01.com.example:subsys1.host2"},
        {"nqn": "nqn.1992-01.com.example:subsys1.host3"},
    ]
    resource.post(hydrate=True)
    print(resource)

Retrieving all NVMe subsystem hosts for an NVMe subsystem

from netapp_ontap import HostConnection
from netapp_ontap.resources import NvmeSubsystemHost

with HostConnection("<mgmt-ip>", username="admin", password="password", verify=False):
    print(
        list(NvmeSubsystemHost.get_collection("acde901a-a379-4a91-9ea6-1b728ed6696f"))
    )


[
    NvmeSubsystemHost({"nqn": "nqn.1992-01.com.example:subsys1.host1"}),
    NvmeSubsystemHost({"nqn": "nqn.1992-01.com.example:subsys1.host2"}),
    NvmeSubsystemHost({"nqn": "nqn.1992-01.com.example:subsys1.host3"}),
]

Retrieving a specific NVMe subsystem host for an NVMe subsystem

from netapp_ontap import HostConnection
from netapp_ontap.resources import NvmeSubsystemHost

with HostConnection("<mgmt-ip>", username="admin", password="password", verify=False):
    resource = NvmeSubsystemHost(
        "acde901a-a379-4a91-9ea6-1b728ed6696f",
        nqn="nqn.1992-01.com.example:subsys1.host1",
    )
    resource.get()
    print(resource)


NvmeSubsystemHost(
    {
        "io_queue": {"count": 4, "depth": 32},
        "nqn": "nqn.1992-01.com.example:subsys1.host1",
        "subsystem": {"uuid": "acde901a-a379-4a91-9ea6-1b728ed6696f"},
    }
)

Deleting an NVMe subsystem host from an NVMe subsystem

from netapp_ontap import HostConnection
from netapp_ontap.resources import NvmeSubsystemHost

with HostConnection("<mgmt-ip>", username="admin", password="password", verify=False):
    resource = NvmeSubsystemHost(
        "acde901a-a379-4a91-9ea6-1b728ed6696f",
        nqn="nqn.1992-01.com.example:subsys1.host1",
    )
    resource.delete()

Classes

class NvmeSubsystem (*args, **kwargs)

An NVMe subsystem maintains configuration state and namespace access control for a set of NVMe-connected hosts.

Initialize the instance of the resource.

Any keyword arguments are set on the instance as properties. For example, if the class was named 'MyResource', then this statement would be true:

MyResource(name='foo').name == 'foo'

Args

*args
Each positional argument represents a parent key as used in the URL of the object. That is, each value will be used to fill in a segment of the URL which refers to some parent object. The order of these arguments must match the order they are specified in the URL, from left to right.
**kwargs
each entry will have its key set as an attribute name on the instance and its value will be the value of that attribute.

Ancestors

Static methods

def count_collection(*args, connection: HostConnection = None, **kwargs) -> int

Fetch a count of all objects of this type from the host.

This calls GET on the object to determine the number of records. It is more efficient than calling get_collection() because it will not construct any objects. Query parameters can be passed in as kwargs to determine a count of objects that match some filtered criteria.

Args

*args
Each entry represents a parent key which is used to build the path to the child object. If the URL definition were /api/foos/{foo.name}/bars, then to get the count of bars for a particular foo, the foo.name value should be passed.
connection
The HostConnection object to use for this API call. If unset, tries to use the connection which is set globally for the library or from the current context.
**kwargs
Any key/value pairs passed will be sent as query parameters to the host. These query parameters can affect the count. A return_records query param will be ignored.

Returns

On success, returns an integer count of the objects of this type. On failure, returns -1.

Raises

NetAppRestError: If the API call returned a status code >= 400, or if there is no connection available to use either passed in or on the library.

def delete_collection(*args, records: Iterable[_ForwardRef('NvmeSubsystem')] = None, body: Union[Resource, dict] = None, poll: bool = True, poll_interval: Union[int, NoneType] = None, poll_timeout: Union[int, NoneType] = None, connection: HostConnection = None, **kwargs) -> NetAppResponse

Removes an NVMe subsystem.

  • vserver nvme subsystem delete

Learn more

Delete all objects in a collection which match the given query.

All records on the host which match the query will be deleted.

Args

*args
Each entry represents a parent key which is used to build the path to the child object. If the URL definition were /api/foos/{foo.name}/bars, then to delete the collection of bars for a particular foo, the foo.name value should be passed.
records
Can be provided in place of a query. If so, this list of objects will be deleted from the host.
body
The body of the delete request. This could be a Resource instance or a dictionary object.
poll
If set to True, the call will not return until the asynchronous job on the host has completed. Has no effect if the host did not return a job response.
poll_interval
If the operation returns a job, this specifies how often to query the job for updates.
poll_timeout
If the operation returns a job, this specifies how long to continue monitoring the job's status for completion.
connection
The HostConnection object to use for this API call. If unset, tries to use the connection which is set globally for the library or from the current context.
**kwargs
Any key/value pairs passed will be sent as query parameters to the host. Only resources matching this query will be deleted.

Returns

A NetAppResponse object containing the details of the HTTP response.

Raises

NetAppRestError: If the API call returned a status code >= 400

def find(*args, connection: HostConnection = None, **kwargs) -> Resource

Retrieves NVMe subsystems.

  • vserver nvme subsystem host show
  • vserver nvme subsystem map show
  • vserver nvme subsystem show

Learn more

Find an instance of an object on the host given a query.

The host will be queried with the provided key/value pairs to find a matching resource. If 0 are found, None will be returned. If more than 1 is found, an error will be raised or returned. If there is exactly 1 matching record, then it will be returned.

Args

*args
Each entry represents a parent key which is used to build the path to the child object. If the URL definition were /api/foos/{foo.name}/bars, then to find a bar for a particular foo, the foo.name value should be passed.
connection
The HostConnection object to use for this API call. If unset, tries to use the connection which is set globally for the library or from the current context.
**kwargs
Any key/value pairs passed will be sent as query parameters to the host.

Returns

A Resource object containing the details of the object or None if no matches were found.

Raises

NetAppRestError: If the API call returned more than 1 matching resource.

def get_collection(*args, connection: HostConnection = None, max_records: int = None, **kwargs) -> Iterable[Resource]

Retrieves NVMe subsystems.

  • vserver nvme subsystem host show
  • vserver nvme subsystem map show
  • vserver nvme subsystem show

Learn more

Fetch a list of all objects of this type from the host.

This is a lazy fetch, making API calls only as necessary when the result of this call is iterated over. For instance, if max_records is set to 5, then iterating over the collection causes an API call to be sent to the server once for every 5 records. If the client stops iterating before getting to the 6th record, then no additional API calls are made.

Args

*args
Each entry represents a parent key which is used to build the path to the child object. If the URL definition were /api/foos/{foo.name}/bars, then to get the collection of bars for a particular foo, the foo.name value should be passed.
connection
The HostConnection object to use for this API call. If unset, tries to use the connection which is set globally for the library or from the current context.
max_records
The maximum number of records to return per call
**kwargs
Any key/value pairs passed will be sent as query parameters to the host.

Returns

A list of Resource objects

Raises

NetAppRestError: If there is no connection available to use either passed in or on the library. This would be not be raised when get_collection() is called, but rather when the result is iterated.

def patch_collection(body: dict, *args, records: Iterable[_ForwardRef('NvmeSubsystem')] = None, poll: bool = True, poll_interval: Union[int, NoneType] = None, poll_timeout: Union[int, NoneType] = None, connection: HostConnection = None, **kwargs) -> NetAppResponse

Updates an NVMe subsystem.

  • vserver nvme subsystem modify

Learn more

Patch all objects in a collection which match the given query.

All records on the host which match the query will be patched with the provided body.

Args

body
A dictionary of name/value pairs to set on all matching members of the collection. The body argument will be ignored if records is provided.
*args
Each entry represents a parent key which is used to build the path to the child object. If the URL definition were /api/foos/{foo.name}/bars, then to patch the collection of bars for a particular foo, the foo.name value should be passed.
records
Can be provided in place of a query. If so, this list of objects will be patched on the host.
poll
If set to True, the call will not return until the asynchronous job on the host has completed. Has no effect if the host did not return a job response.
poll_interval
If the operation returns a job, this specifies how often to query the job for updates.
poll_timeout
If the operation returns a job, this specifies how long to continue monitoring the job's status for completion.
connection
The HostConnection object to use for this API call. If unset, tries to use the connection which is set globally for the library or from the current context.
**kwargs
Any key/value pairs passed will be sent as query parameters to the host. Only resources matching this query will be patched.

Returns

A NetAppResponse object containing the details of the HTTP response.

Raises

NetAppRestError: If the API call returned a status code >= 400

def post_collection(records: Iterable[_ForwardRef('NvmeSubsystem')], *args, hydrate: bool = False, poll: bool = True, poll_interval: Union[int, NoneType] = None, poll_timeout: Union[int, NoneType] = None, connection: HostConnection = None, **kwargs) -> Union[List[NvmeSubsystem], NetAppResponse]

Creates an NVMe subsystem.

Required properties

  • svm.uuid or svm.name - Existing SVM in which to create the NVMe subsystem.
  • name - Name for NVMe subsystem. Once created, an NVMe subsytem cannot be renamed.
  • os_type - Operating system of the NVMe subsystem's hosts.
  • vserver nvme subsystem create

Learn more

Send this collection of objects to the host as a creation request.

Args

records
A list of Resource objects to send to the server to be created.
*args
Each entry represents a parent key which is used to build the path to the child object. If the URL definition were /api/foos/{foo.name}/bars, then to create a bar for a particular foo, the foo.name value should be passed.
hydrate
If set to True, after the response is received from the call, a a GET call will be made to refresh all fields of each object. When hydrate is set to True, poll must also be set to True.
poll
If set to True, the call will not return until the asynchronous job on the host has completed. Has no effect if the host did not return a job response.
poll_interval
If the operation returns a job, this specifies how often to query the job for updates.
poll_timeout
If the operation returns a job, this specifies how long to continue monitoring the job's status for completion.
connection
The HostConnection object to use for this API call. If unset, tries to use the connection which is set globally for the library or from the current context.
**kwargs
Any key/value pairs passed will be sent as query parameters to the host. Only resources matching this query will be patched.

Returns

A list of Resource objects matching the provided
type which have been created by the host and returned. This is _not_
 
the same list that was provided, so to continue using the object, you
 

should save this list. If poll is set to False, then a NetAppResponse object is returned instead.

Raises

NetAppRestError: If the API call returned a status code >= 400

Methods

def delete(self, body: Union[Resource, dict] = None, poll: bool = True, poll_interval: Union[int, NoneType] = None, poll_timeout: Union[int, NoneType] = None, **kwargs) -> NetAppResponse

Removes an NVMe subsystem.

  • vserver nvme subsystem delete

Learn more

Send a deletion request to the host for this object.

Args

body
The body of the delete request. This could be a Resource instance or a dictionary object.
poll
If set to True, the call will not return until the asynchronous job on the host has completed. Has no effect if the host did not return a job response.
poll_interval
If the operation returns a job, this specifies how often to query the job for updates.
poll_timeout
If the operation returns a job, this specifies how long to continue monitoring the job's status for completion.
**kwargs
Any key/value pairs passed will be sent as query parameters to the host.

Returns

A NetAppResponse object containing the details of the HTTP response.

Raises

NetAppRestError: If the API call returned a status code >= 400

def get(self, **kwargs) -> NetAppResponse

Retrieves an NVMe subsystem.

Expensive properties

There is an added cost to retrieving values for these properties. They are not included by default in GET results and must be explicitly requested using the fields query parameter. See Requesting specific fields to learn more. * subsystem_maps.*

  • vserver nvme subsystem host show
  • vserver nvme subsystem map show
  • vserver nvme subsystem show

Learn more

Fetch the details of the object from the host.

Requires the keys to be set (if any). After returning, new or changed properties from the host will be set on the instance.

Returns

A NetAppResponse object containing the details of the HTTP response.

Raises

NetAppRestError: If the API call returned a status code >= 400

def patch(self, hydrate: bool = False, poll: bool = True, poll_interval: Union[int, NoneType] = None, poll_timeout: Union[int, NoneType] = None, **kwargs) -> NetAppResponse

Updates an NVMe subsystem.

  • vserver nvme subsystem modify

Learn more

Send the difference in the object's state to the host as a modification request.

Calculates the difference in the object's state since the last time we interacted with the host and sends this in the request body.

Args

hydrate
If set to True, after the response is received from the call, a a GET call will be made to refresh all fields of the object.
poll
If set to True, the call will not return until the asynchronous job on the host has completed. Has no effect if the host did not return a job response.
poll_interval
If the operation returns a job, this specifies how often to query the job for updates.
poll_timeout
If the operation returns a job, this specifies how long to continue monitoring the job's status for completion.
**kwargs
Any key/value pairs passed will normally be sent as query parameters to the host. If any of these pairs are parameters that are sent as formdata then only parameters of that type will be accepted and all others will be discarded.

Returns

A NetAppResponse object containing the details of the HTTP response.

Raises

NetAppRestError: If the API call returned a status code >= 400

def post(self, hydrate: bool = False, poll: bool = True, poll_interval: Union[int, NoneType] = None, poll_timeout: Union[int, NoneType] = None, **kwargs) -> NetAppResponse

Creates an NVMe subsystem.

Required properties

  • svm.uuid or svm.name - Existing SVM in which to create the NVMe subsystem.
  • name - Name for NVMe subsystem. Once created, an NVMe subsytem cannot be renamed.
  • os_type - Operating system of the NVMe subsystem's hosts.
  • vserver nvme subsystem create

Learn more

Send this object to the host as a creation request.

Args

hydrate
If set to True, after the response is received from the call, a a GET call will be made to refresh all fields of the object.
poll
If set to True, the call will not return until the asynchronous job on the host has completed. Has no effect if the host did not return a job response.
poll_interval
If the operation returns a job, this specifies how often to query the job for updates.
poll_timeout
If the operation returns a job, this specifies how long to continue monitoring the job's status for completion.
**kwargs
Any key/value pairs passed will normally be sent as query parameters to the host. If any of these pairs are parameters that are sent as formdata then only parameters of that type will be accepted and all others will be discarded.

Returns

A NetAppResponse object containing the details of the HTTP response.

Raises

NetAppRestError: If the API call returned a status code >= 400

Inherited members

class NvmeSubsystemSchema (*, only: Union[Sequence[str], Set[str]] = None, exclude: Union[Sequence[str], Set[str]] = (), many: bool = False, context: Dict = None, load_only: Union[Sequence[str], Set[str]] = (), dump_only: Union[Sequence[str], Set[str]] = (), partial: Union[bool, Sequence[str], Set[str]] = False, unknown: str = None)

The fields of the NvmeSubsystem object

Ancestors

  • netapp_ontap.resource.ResourceSchema
  • marshmallow.schema.Schema
  • marshmallow.base.SchemaABC

Class variables

comment GET POST PATCH

A configurable comment for the NVMe subsystem. Optional in POST and PATCH.

delete_on_unmap GET POST PATCH

An option that causes the subsystem to be deleted when the last subsystem map associated with it is deleted. This property defaults to false when the subsystem is created.

hosts GET POST

The NVMe hosts configured for access to the NVMe subsystem. Optional in POST.

io_queue GET POST PATCH

The io_queue field of the nvme_subsystem.

The links field of the nvme_subsystem.

name GET POST

The name of the NVMe subsystem. Once created, an NVMe subsystem cannot be renamed. Required in POST.

Example: subsystem1

os_type GET POST

The host operating system of the NVMe subsystem's hosts. Required in POST.

Valid choices:

  • aix
  • linux
  • vmware
  • windows
serial_number GET

The serial number of the NVMe subsystem.

Example: wCVsgFMiuMhVAAAAAAAB

subsystem_maps GET

The NVMe namespaces mapped to the NVMe subsystem.
There is an added cost to retrieving property values for subsystem_maps. They are not populated for either a collection GET or an instance GET unless explicitly requested using the fields query parameter. See Requesting specific fields to learn more.

svm GET POST PATCH

The svm field of the nvme_subsystem.

target_nqn GET

The NVMe qualified name (NQN) used to identify the NVMe storage target.

Example: nqn.1992-01.example.com:string

uuid GET

The unique identifier of the NVMe subsystem.

Example: 1cd8a442-86d1-11e0-ae1c-123478563412

vendor_uuids GET POST

Vendor-specific identifiers (UUIDs) optionally assigned to an NVMe subsystem when the subsystem is created. The identifiers are used to enable vendor-specific NVMe protocol features. The identifiers are provided by a host application vendor and shared with NetApp prior to a joint product release. Creating an NVMe subsystem with an unknown or non-specific identifier will have no effect on the NVMe subsystem. Refer to the ONTAP SAN Administration Guide for a list of the supported vendor-specific identifiers. After a subsystem is created, the vendor-specific identifiers cannot be changed or removed. Optional in POST.

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